222 research outputs found

    Incorporating bioenergy into sustainable landscape designs

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    AbstractThe paper describes an approach to landscape design that focuses on integrating bioenergy production with other components of environmental, social and economic systems. Landscape design as used here refers to a spatially explicit, collaborative plan for management of landscapes and supply chains. Landscape design can involve multiple scales and build on existing practices to reduce costs or enhance services. Appropriately applied to a specific context, landscape design can help people assess trade-offs when making choices about locations, types of feedstock, transport, refining and distribution of bioenergy products and services. The approach includes performance monitoring and reporting along the bioenergy supply chain. Examples of landscape design applied to bioenergy production systems are presented. Barriers to implementation of landscape design include high costs, the need to consider diverse land-management objectives from a wide array of stakeholders, up-front planning requirements, and the complexity and level of effort needed for successful stakeholder involvement. A landscape design process may be stymied by insufficient data or participation. An impetus for coordination is critical, and incentives may be required to engage landowners and the private sector. Hence devising and implementing landscape designs for more sustainable outcomes require clear communication of environmental, social, and economic opportunities and concerns

    P352 A propensity score-matched, real-world comparison of ustekinumab vs vedolizumab as a second-line treatment for Crohn's disease. The Cross Pennine study II

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    Abstract Background The best choice of biological agents after failure to an anti-tumour necrosis factor (TNF)α agent in patients with Crohn's disease (CD) is yet to be defined. Real-world data dealing with this issue are still emerging. Methods This is a multicentre retrospective study including eight UK hospitals (August 2014-April 2020). We retrospectively collected data of patients treated with ustekinumab. Clinical response and remission at 14 and 52 weeks evaluated through Physician Global Assessment (PGA) and adverse events were recorded. Predictors of clinical response were examined, and a propensity score-matched analysis with a cohort of patients treated with vedolizumab was performed. Results Overall, 282 patients (mean age 40±15, F:M ratio 1.7:1) treated with ustekinumab were included. Clinical response or remission was reached by 200/282 patients (70.9%) at 14 weeks, and by 162/259 patients (62.5%) at 52 weeks. The most common reason for discontinuation was either primary failure or loss of response, followed by the occurrence of adverse events and by the need for surgery. The rate of non-adherence was rather low (1.4%). Current smoking (OR 2.48, 95% CI 1.13-5.44; p=0.02), baseline PGA (OR 2.4, 95% CI 1.55-3.69, p<0.001), and use of steroids (OR 2.42, 95% CI 1.26-4.65, p=0.008) were associated with 52-week treatment failure. Overall, 74 adverse events occurred, of which 26 were labelled as serious (8.3 per 100 person-year). After exclusion of patients without anti-TNFα exposure prior to starting ustekinumab or vedolizumab and exclusion of patients previously exposed to vedolizumab or ustekinumab, we analysed 275/282 patients (97.5%) from the ustekinumab cohort and 118/135 patients (87.4%) from the vedolizumab cohort. Propensity score analysis revealed that at 14 weeks, patients treated with ustekinumab were 38% (95% CI 25-50%; p<0.001) more likely to achieve a clinical remission, while at 52 weeks, the difference of 9% (95% CI -15-33%; p=0.462) was not significant. Conclusion Ustekinumab was effective and well tolerated in this real-world cohort. While ustekinumab proved more effective at 14-week follow-up, we found no statistically significant differences in outcomes at 52 weeks

    Anti-nausea effects and pharmacokinetics of ondansetron, maropitant and metoclopramide in a low-dose cisplatin model of nausea and vomiting in the dog: a blinded crossover study

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    Nausea is a subjective sensation which is difficult to measure in non-verbal species. The aims of this study were to determine the efficacy of three classes of antiemetic drugs in a novel low dose cisplatin model of nausea and vomiting and measure change in potential nausea biomarkers arginine vasopressin (AVP) and cortisol. A four period cross-over blinded study was conducted in eight healthy beagle dogs of both genders. Dogs were administered 18 mg/m2 cisplatin intravenously, followed 45 min later by a 15 min infusion of either placebo (saline) or antiemetic treatment with ondansetron (0.5 mg/kg; 5-HT3 antagonist), maropitant (1 mg/kg; NK1 antagonist) or metoclopramide (0.5 mg/kg; D2 antagonist). The number of vomits and nausea associated behaviours, scored on a visual analogue scale, were recorded every 15 min for 8 h following cisplatin administration. Plasma samples were collected to measure AVP, cortisol and antiemetic drug concentrations

    Measurement of 73 Ge(n,Îł) cross sections and implications for stellar nucleosynthesis

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    © 2019 The Author(s). Published by Elsevier B.V.73 Ge(n,γ) cross sections were measured at the neutron time-of-flight facility n_TOF at CERN up to neutron energies of 300 keV, providing for the first time experimental data above 8 keV. Results indicate that the stellar cross section at kT=30 keV is 1.5 to 1.7 times higher than most theoretical predictions. The new cross sections result in a substantial decrease of 73 Ge produced in stars, which would explain the low isotopic abundance of 73 Ge in the solar system.Peer reviewe

    Measurement of the Ge 70 (n,Îł) cross section up to 300 keV at the CERN n-TOF facility

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    ©2019 American Physical Society.Neutron capture data on intermediate mass nuclei are of key importance to nucleosynthesis in the weak component of the slow neutron capture processes, which occurs in massive stars. The (n,γ) cross section on Ge70, which is mainly produced in the s process, was measured at the neutron time-of-flight facility n-TOF at CERN. Resonance capture kernels were determined up to 40 keV neutron energy and average cross sections up to 300 keV. Stellar cross sections were calculated from kT=5 keV to kT=100 keV and are in very good agreement with a previous measurement by Walter and Beer (1985) and recent evaluations. Average cross sections are in agreement with Walter and Beer (1985) over most of the neutron energy range covered, while they are systematically smaller for neutron energies above 150 keV. We have calculated isotopic abundances produced in s-process environments in a 25 solar mass star for two initial metallicities (below solar and close to solar). While the low metallicity model reproduces best the solar system germanium isotopic abundances, the close to solar model shows a good global match to solar system abundances in the range of mass numbers A=60-80.Peer reviewedFinal Published versio

    High frequency of germline TP53 mutations in a prospective adult-onset sarcoma cohort

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    Sarcomas are a key feature of Li-Fraumeni and related syndromes (LFS/LFL), associated with germline TP53 mutations. Current penetrance estimates for TP53 mutations are subject to significant ascertainment bias. The International Sarcoma Kindred Study is a clinic-based, prospective cohort of adult-onset sarcoma cases, without regard to family history. The entire cohort was screened for mutations in TP53 using high-resolution melting analysis and Sanger sequencing, and multiplex-ligation-dependent probe amplification and targeted massively parallel sequencing for copy number changes. Pathogenic TP53 mutations were detected in blood DNA of 20/559 sarcoma probands (3.6%); 17 were germline and 3 appeared to be somatically acquired. Of the germline carriers, one appeared to be mosaic, detectable in the tumor and blood, but not epithelial tissues. Germline mutation carriers were more likely to have multiple cancers (47% vs 15% for non-carriers, P = 3.0×10(-3)), and earlier cancer onset (33 vs 48 years, P = 1.19×10(-3)). The median survival of mutation carriers following first cancer diagnosis was not significantly different from non-carriers. Only 10/17 (59%) pedigrees met classical or Chompret criteria for LFS. In summary, germline TP53 mutations are not rare in adult patients with sarcoma, with implications for screening, surveillance, treatment and genetic counselling of carriers and family members.Gillian Mitchell, Mandy L. Ballinger, Stephen Wong, Chelsee Hewitt, Paul James, Mary- Anne Young, Arcadi Cipponi, Tiffany Pang, David L. Goode, Alex Dobrovic, David M. Thomas, on behalf of the International Sarcoma Kindred Stud

    Initial paclitaxel improves outcome compared with CMFP combination chemotherapy as front-line therapy in untreated metastatic breast cancer

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    Purpose: To determine the place of single-agent paclitaxel compared with nonanthracycline combination chemotherapy as front-line therapy in metastatic breast cancer. Patients and Methods: patients with previously untreated metastatic breast cancer were randomized to receive either paclitaxel 200 mg/m(2) intravenously (IV) over 3 hours for eight cycles (24 weeks) or standard cyclophosphamide 100 mg/m(2)/d orally on days 1 to 14, methotrexate 40 mg/m(2) IV on days 1 and 8, fluorouracil 600 mg/m(2) IV on days 1 and 8, and prednisone 40 mg/m2/d orally on days 1 to 14 (CMFP) for six cycles (24 weeks) with epirubicin recommended as second-line therapy. Results: A total of 209 eligible patients were randomized with a median survival duration of 17.3 months for paclitaxel and 13.9 months for CMFP. Multivariate analysis showed that patients who received paclitaxel survived significantly longer than those who received CMFP (P = .025). Paclitaxel produced significantly less severe leukopenia, thrombocytopenia, mucositis, documented infections (all P < .001), nausea or vomiting (P = .003), and fever without documented infection (P = .007), and less hospitalization for febrile neutropenia than did CMFP (P = .001). Alopecia, peripheral neuropathy, and myalgia or arthralgia were more severe with paclitaxel (all P < .0001). Overall, quality of life was similar for both treatments (P greater than or equal to .07). Conclusion: Initial paclitaxel was associated with significantly less myelosuppression and fewer infections, with longer survival and similar quality of life and control of metastatic breast cancer compared with CMFP. (C) 1999 by American Society of Clinical Oncology
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